== sanity test 413k: QoS mkdir exclude prefixes ========== 13:08:41 (1790010521)
lmv.lustre-clilmv-ffff934558057800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff934558057800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff934558057800.qos_exclude_prefixes=_temporary